Respan
Models published by Respan, available through the AnyRouter API. Each can route across multiple upstream providers for availability and price.
Span-01 Lite is a behavior-scoring classifier from Respan — the free, lighter tier of Span-01, a 4B model trained with RLAIF on classification reasoning rather than fixed taxonomies. Send a conversation span and a set of plain-language behavior definitions and get a present / absent / not_observable probability per behavior in a single forward pass, with no token-by-token generation. Respan reports it ahead of Jev 1.13 and Sonnet 5 on their English and multilingual behavior-detection suites. Call POST /api/v1/decisions (POST /api/v1/systemone is the same handler).
Span-01 is a behavior-scoring classifier from Respan, a 4B model trained with RLAIF on classification reasoning rather than fixed taxonomies. Send a conversation span and a set of plain-language behavior definitions and get a present / absent / not_observable probability per behavior in a single forward pass, with no token-by-token generation. It is the full tier of the family; Span-01 Lite is the lighter tier. Call POST /api/v1/decisions (POST /api/v1/systemone is the same handler).